A4D Wiki
Transformers character
First appearance Transformers: Cybertron
Voiced by Terry Klassen
(Japanese) Yasuyuki Kase
Aliases Tera Shaver
Affiliation Decepticon
Partner Blight
Alternate modes Mechanical Pteranodon
Mechanical Dragon

Brimstone is the name of several fictional characters in the various Transformers universes.

Transformers: Cybertron

Brimstone is armed with his beast mode's claws, and Cyber Key-activated blades on each of his wings (Air Knife in Galaxy Force).

Due to his role as an antagonist, Brimstone is classified as a Decepticon in the toy line. However, his true allegiance in the television series is to Scourge, and he follows Scourge when he allies himself with the Autobots. His Hasbro and Takara tech specs indicated simply that he wasn't too bright - usually leaving the thinking to his partner Undermine. However, he is still extremely dangerous in combat. The Cyber Key info on the Hasbro website revealed that he did have one other love - playing Praxus Fold Em’ data cards at the Jungle Temple for Energon goodies and getting Undermine to do his chores (and vice versa).

Animated series

Brimstone is one of the servants of Scourge, the leader of Jungle Planet. Though originally the planet was plagued by poverty, marauders, and lawlessness, Scourge would manage to bring order through a policy of dictatorship. Brimstone would aid him in his rise to power, and would become one of his personal underlings and temple guardians.

Often seen with Undermine, who also transformed into a prehistoric saurian, Brimstone's chief role in the series was that of a loyal underling and aerial scout. He is not very bright.

As the Grand Black Hole continued to enlarge, Primus attempted to seal it. This was witnessed through giant space bridges on Velocitron by Brakedown, Clocker and Dirt Boss, on the planet Animatros by Backstop, Undermine and Brimstone, and on Earth (episode 42, "City").

Later, Brimstone would join the Autobots' alliance of Transformers throughout the galaxy along with Scourge and Undermine. He participated in the final battle against Galvatron.

In the final episode of Transformers: Cybertron Optimus Prime proposed a new Space Bridge project using the power of the four Cyber Planet Keys and the four great ships. Many Autobots and former Decepticons joined in the project. Metroplex lead the Giant Planet ship and key with Drillbit, Undermine and Brimstone.

Transformers: Universe

Brimstone is the name of a Mini-Con who turns into a dragon.


Brimstone is a Decepticon that transforms into a chopper. According to his bio, he was once the king of the roads of Cybertron until he developed a fierce rivalry with the Autobot Hubcap.

Despite not being part of the movie line, Brimstone's design is based on a motorcycle from the Revenge of the Fallen film seen in Mikaela's garage.


Brimstone was featured in Botcon's 2014 story/toy line "Pirates vs. Knights" as part of a crew of Decepticon Pirates. He transforms into a railgun capable of being handled by Scorponok or of firing on its own. His tech specs describe him as a spy and eavesdropper who is constantly seeking information that he can report to his captain, Cannonball.